If you are making your jam game in Godot 4, here are free drop-in add-ons. Free for commercial and non-commercial use, no attribution required, no sign-up. The licence only forbids reselling or redistributing them as a standalone asset or inside another asset pack.
For a Halloween game:
- [Weather FX 2D Lite](https://inkharbor.itch.io/weather-fx-2d-lite): rain, snow, fog and lightning flash as shader layers
- [Ember VFX 3D Lite](https://inkharbor.itch.io/ember-vfx-3d-lite): fire, magic and lightning effects for 3D
- [Retro Screen FX Lite](https://inkharbor.itch.io/retro-screen-fx-lite): CRT, VHS, pixelate, palette
- [Toon Forge 3D Lite](https://inkharbor.itch.io/toon-forge-3d-lite): toon and dissolve shaders
- [Print & Paint FX free sampler](https://inkharbor.itch.io/print-and-paint-fx-free): halftone, paper, ink outline
More free ones (hit stop and shake, screen transitions, dialogue, inventory) are on [the profile](https://inkharbor.itch.io), search for "Lite".
Honest notes: the code and text are AI-assisted and tested by me, and each page lists what was tested (the shader packs ran on Godot 4.7, RTX 2060, Forward+ and Compatibility). The jam says assets must be listed, so add any of these you use to your submission credits. Questions about setup are welcome here.
